Home / 814,653.28-1,222,039.88-215,610.39

Finding the Fourth Proportional to 814,653.28, 1,222,039.88 and 215,610.39

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Solution

The fourth proportional to 814,653.28, 1,222,039.88 and 215,610.39 is: 323,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,653.28 : 1,222,039.88 = 215,610.39 : x
  2. Step 2: Convert to fraction form
    814,653.28/1,222,039.88 = 215,610.39/x
  3. Step 3: Cross multiply
    814,653.28x = 1,222,039.88 × 215,610.39
  4. Step 4: Simplify right side
    814,653.28x = 263,484,494,852.84
  5. Step 5: Solve for x
    x = 263,484,494,852.84/814,653.28
  6. Step 6: Final answer
    x = 323,431.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.